同位素

So the meta-granitoids can he recognized and separated from the metamorphic sequences. They are grouped as the Meoproterozoic-Neoproterozoic gneissoid granite-monzogranite-granodiorite, with their isotope ages of 953.4 Ma to 1450 Ma, and the Sinian schistostose quartz monzogranite diorite.

主要成岩期及代表性岩类有：晚元古代为片麻状正长花岗岩－二长花岗岩－花岗闪长岩，同位素年龄为953.4~1450Ma；震旦纪为片理化石英二长岩－石英闪长岩，同位素年龄为547Ma。

Not only Sr-Nd isotopic but also Pb isotopic represent the characteristics of crustal granitoid.

无论Sr-Nd同位素还是Pb同位素特征都表现出壳源花岗岩的特点。

Also, there is no formula can be used to calculate errors of these parameters.Based on above reasons, the purposes of the research are to build a reliable geochronological framework of Paleozoic granitoid in study area, to distinguish their genetic types and tectonic settings, and to analyses their orogenic response; to derive a set of formulas for calculating errors of the paramers mentioned above; to ascertain if North Qaidam belongs to North China Block or Yangtze Block.

基于上述存在的问题，本项研究的目的是：建立研究区古生代花岗岩类精确的年代学格架，判别其成因类型和构造环境，分析其造山响应：推演出一套适用于Sr、Nd同位素初始比值和Nd同位素模式年龄等重要示踪参数误差计算的公式；确定柴北缘地区大地构造属性(华北板块还是扬子板块？)。

It was also indicated by the temperature calculation that the lithspheric mantle is stratigraphically layered with the lower part composed by fertile lherzolite and the upper part by refractory harzburgite and clinopyroxene-poor lherzolite.

Sr-Nd-Hf同位素资料反映这些地幔包体均表现为亏损性质，而Re-Os同位素资料确定上述岩石圈地幔形成于中元古代，明显老于上覆地壳的新元古宙时代，反映壳幔年龄上的解耦。

The stable carbon isotope values of α-,β-,and γ-hexachlorocyclohexane isomers were determined by GC-C-IRMS,EA-IRMS,and Dual-inlet IRMS in this study.

应用GC-C-IRMS技术分析了水样品中α-和γ-六六六的碳同位素组成，结果表明六六六在溶解、稀释、萃取、挥发等过程碳同位素组成没有分馏现象。

The influence of the monsoon climate on the isotopic composition of precipitation is discussed based on the accumulated data in China.

根据我国积累的雨水同位素组成资料，讨论了季风气候对雨水同位素组成的影响。

The carbon isotopic composition of soil organic matter has been widely used to reconstruct the history of climate and vegetation.

土壤有机碳同位素地球化学在气候和植被恢复方面的研究已得到广泛应用，但目前对不同类型、不同时代的土壤总有机碳同位素样品制备过程的系统研究较少。

In addition to available data, we can conclude that crust contamination of Lutao arc magma has resulted in low helium ratios, high strontium ratios and low neodymium ratios of Lutao lavas.

配合上岩石学的观察，本研究推论绿岛火成岩曾受到地壳混染作用影响，而产生低3He/4He比值、高锶同位素及低钕同位素比值的地化特性。

Kinetics of oxygen isotope exchange between water and minerals of miarolitic alkaline granite from Nianzishan

氢同位素动力学同位素效应很大，α=kH/kD可达2～10左右。0℃时Al4C3与水反应α=3.9，30℃时Fe与H2SO4反应α=6.6。

A new process for the fabrication of the surface electrode of nuclear microbattery using lift-off process with SU8 photo resist is proposed,via use BP212 photo resist as a sacrificial layer,the SU8 photo resist in the channels was removed effectively,and the surface electrode of the nuclear microbattery was fabricated successfully.

开发了一种利用SU8胶剥离工艺制作沟槽型同位素微电池表面电极的新工艺，通过使用BP212正胶作为牺牲层，有效地解决了在制作沟槽型同位素微电池表面电极时，堆胶以及沟槽中SU8胶不易去除的难题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。